Screen-Printed Gold Electrode Functionalized with Deferoxamine for Iron(III) Detection

Author:

Alberti GiancarlaORCID,Zanoni Camilla,Rovertoni Sara,Magnaghi Lisa RitaORCID,Biesuz Raffaela

Abstract

Deferoxamine (DFO), a hydroxamic siderophore with a high affinity for Fe(III), is immobilized as a functionalized self-assembled monolayer of a thiol (SAM) on the gold surface of a screen-printed cell to develop a voltammetric sensor for iron(III). The surface of the working electrode was characterized, before and after functionalization, by determining surface properties such as the area and the double-layer capacitance. The Fe(III) detection was performed by DPV analysis after preconcentration of the cation at the open circuit potential in solution at pH = 1 for two minutes. The method was applied to the iron(III) quantification in water samples giving promising results.

Publisher

MDPI AG

Subject

Physical and Theoretical Chemistry,Analytical Chemistry

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